# Waves On A String Postlab Quiz

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Jan_parker
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Quizzes Created: 9 | Total Attempts: 58,566
Questions: 10 | Attempts: 8,111  Settings  Have you learned about string waves in physics? Let's see how well you remember this topic from the quiz given below. Try this 'Waves on a string post lab' quiz and see if you can pass it or not. Please take this test after you have completed all of the steps of the lab. It is an individual effort; please do not work together on the quiz. This quiz consists of mix-type questions, and you need to pick the correct option for every question. So, get ready to test your brain skills!

• 1.

### If you advance the movie one frame, the knot at point A would be

• A.

In the same place

• B.

Higher

• C.

Lower

• D.

To the right

• E.

To the left

C. Lower
Explanation
If you advance the movie one frame, the knot at point A would be lower. This means that in the next frame, the position of the knot at point A will be lower compared to its current position.

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• 2.

### If the person generates a new pulse like the first, but moves their hand more quickly, the pulse would be

• A.

The same size

• B.

Wider

• C.

Narrower

• D.

Higher

C. Narrower
Explanation
If the person moves their hand more quickly while generating a new pulse, the pulse would be narrower. This is because the width of a pulse is determined by the duration of time it takes to generate it. When the hand moves more quickly, the pulse is generated in a shorter amount of time, resulting in a narrower pulse.

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• 3.

### If the person generates a new pulse like the first but moves his hand further up, the pulse would be

• A.

The same size

• B.

Taller

• C.

Shorter

• D.

None of the above

B. Taller
Explanation
If the person generates a new pulse like the first but moves his hand further up, the pulse would be taller. This is because when the hand is moved further up, it creates a larger displacement in the air molecules, resulting in a larger amplitude or height of the pulse. Therefore, the pulse would appear taller compared to the original pulse.

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• 4.

### If the person generates another pulse like the first but the rope is tightened, the pulse will move

• A.

At the same rate

• B.

Faster

• C.

Slower

• D.

None of the above

B. Faster
Explanation
When the rope is tightened, the tension in the rope increases. This increase in tension causes the pulse to travel faster because the speed of a wave is directly proportional to the tension in the medium through which it is traveling. Therefore, when the tension is increased, the pulse will move faster.

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• 5.

### If you advance the movie one frame, the knot at point A would be

• A.

In the same place

• B.

Higher

• C.

Lower

• D.

To the right

• E.

To the left

B. Higher
Explanation
If you advance the movie one frame, the knot at point A would be higher. This suggests that in the next frame, the position of the knot would be above its current position.

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• 6.

### If you advance the movie one frame, the pattern of waves will be ____ relative to the hand.

• A.

In the same place

• B.

Shifted right

• C.

Shifted left

• D.

Shifted up

• E.

Shifted down

B. Shifted right
Explanation
When advancing the movie one frame, the pattern of waves will be shifted right relative to the hand. This means that the position of the waves will appear to move towards the right side of the screen compared to the initial position.

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• 7.

### If the person starts over and moves his hand more quickly, the peaks of the waves will be

• A.

The same distance apart

• B.

Further apart

• C.

Closer together

• D.

None of the above

C. Closer together
Explanation
When the person moves their hand more quickly, it means that they are increasing the frequency of their hand movements. This increase in frequency leads to the waves being closer together. This is because the frequency of a wave is directly proportional to the distance between its peaks. So, if the person increases the frequency by moving their hand more quickly, the peaks of the waves will be closer together.

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• 8.

### The wave that vibrates at an angle of 90 degrees to the direction in which it is moving is called

• A.

Transverse wave

• B.

Longitudinal wave

• C.

Mechanical wave

• D.

Inverse wave

A. Transverse wave
Explanation
A transverse wave is a wave that vibrates perpendicular (at a 90-degree angle) to the direction in which it is moving. In this type of wave, the particles of the medium move up and down or side to side, creating crests and troughs. This is different from a longitudinal wave, where the particles of the medium vibrate parallel to the direction of the wave. Mechanical waves are waves that require a medium to travel through, and inverse wave is not a recognized term in wave physics.

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• 9.

### Sound waves in the air can be recognized as longitudinal waves. State true or false.

• A.

True

• B.

False

A. True
Explanation
Sound waves in the air can be recognized as longitudinal waves because they propagate by compressing and expanding the air particles in the same direction as the wave travels. This means that the particles of the medium (air) vibrate parallel to the direction of the wave, creating areas of compression and rarefaction. Therefore, the statement is true.

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• 10.

### What is the name of the wave that vibrates in the direction that it is moving?

• A.

Transverse wave

• B.

Mechanical wave

• C.

Longitudinal wave

• D.

None of the above Back to top